Psychiatry ICD-10 Codes & CPT Codes
Psychiatry billing combines E&M visit codes with psychotherapy add-on codes, requiring precise documentation of both medical decision-making and therapy minutes. This page reflects FY2026 ICD-10-CM (effective Oct 1, 2025, current) and CPT 2026, plus FY2027 ICD-10-CM additions (effective Oct 1, 2026) noted where they apply, covering the top ICD-10-CM diagnosis codes and CPT procedure codes used by psychiatrists and psychiatric nurse practitioners in outpatient and inpatient settings across the US.
FY 2027 ICD-10-CM (CMS, eff. 10/1/2026) · CPT 2026 (AMA) · All codes verified billable · Last verified: October 2026
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Top ICD-10 Codes for Psychiatry
Source: CMS ICD-10-CM FY 2026 & FY 2027 (F64.A effective 10/1/2026)
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Common CPT Codes for Psychiatry Billing
*Approximate 2026 CMS national non-facility rate. Rates vary by geography, setting, and payer contract. Refer to the CMS Physician Fee Schedule for official rates.
Top Denial Reasons for Psychiatry Claims
Missing or Insufficient Medical Necessity Documentation
Payers require documented clinical rationale (symptom severity, functional impairment, treatment plan) to justify psychiatric services. Include PHQ-9/GAD-7 scores, current symptoms, and response to prior treatment in every note.
Incorrect Use of E&M + Psychotherapy Add-On Codes
Billing 90837 (standalone psychotherapy) alongside an E&M code on the same date triggers duplicate claim denials. Use the appropriate add-on codes (90833/90836/90838) and append modifier -25 to the E&M to indicate a separately identifiable service.
Prior Authorization Not Obtained for Ongoing Psychotherapy
Many commercial payers require prior authorization after 8-12 psychotherapy sessions and for certain psychiatric medications. Verify auth requirements at the start of treatment and track renewal deadlines to prevent retroactive denials.
Diagnosis-to-Procedure Code Mismatch
Linking a psychotherapy CPT code to an unrelated or non-psychiatric ICD-10 code (e.g., a medical diagnosis without a co-occurring mental health code) triggers medical necessity denials. Ensure the primary ICD-10 diagnosis supports the psychiatric service billed.
Psychiatry Billing & Coding Tips
- Psychiatrists who provide both medication management and psychotherapy in the same visit bill the E&M code (99213/99214) plus a psychotherapy add-on code (90833/90836/90838) — do not bill a standalone psychotherapy code (90837) if prescribing is involved.
- Document the psychotherapy time separately from the E&M time: the add-on codes require 16-37 min (90833), 38-52 min (90836), or 53+ min (90838) of psychotherapy beyond the E&M.
- PDMP (Prescription Drug Monitoring Program) queries should be documented at every visit where controlled substances are prescribed — required by most state laws and reduces audit exposure.
- Inpatient psychiatric services use different E&M codes: 99221-99223 for initial hospital care and 99231-99233 for subsequent visits — not the outpatient 99213/99214 series.
- CPT 2026 formally recognizes group psychotherapy (90853) in Appendix P (audio-video telehealth) and Appendix T (audio-only telehealth) — confirm payer-specific coverage before billing it as a telehealth service with modifier -95 or -93.
- New FY2026 code F68.A (factitious disorder imposed on another) applies to the perpetrator, not the victim, in suspected Munchausen by proxy cases — code the victim’s presenting condition separately.
Related Resources
Related Specialties
Physicians and coders who visit this page also reference these specialty codes.
Frequently Asked Questions
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